Предмет: Математика, автор: Аноним

из 200 птиц в парке 80% составляют синицы а остальные снегири и поползни скролько снегирей в парке если поползней в 3 раза меньше? решитке плизз даю 45 балов

Ответы

Автор ответа: exbntkm23
0

1)80%=4/5

2)200*4/5=160(пт.)-синицы

3)200-160=40(пт.)-поползни и снегири

4)40=1x+3x=4x

5)40:4=10(пт.)-x или поползни

6)3*10=30(пт.)-снегири

Ответ: 30 птиц.

Автор ответа: ĒVą
0

Ответ:

ответ: 30 снегирей в парке.

Пошаговое объяснение:

1) 80%=4\5

2) 200*4\5= 160(п) синицы

3)200-160=40(п) снегири и поползни

4) 3+1= 4 (ч) всего (так как задача на части)

5)40:4= 10(п) поползни

6) 40-10= 30(п) снегири

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